7n-(3n+18)=

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Solution for 7n-(3n+18)= equation:


Simplifying
7n + -1(3n + 18) = 0

Reorder the terms:
7n + -1(18 + 3n) = 0
7n + (18 * -1 + 3n * -1) = 0
7n + (-18 + -3n) = 0

Reorder the terms:
-18 + 7n + -3n = 0

Combine like terms: 7n + -3n = 4n
-18 + 4n = 0

Solving
-18 + 4n = 0

Solving for variable 'n'.

Move all terms containing n to the left, all other terms to the right.

Add '18' to each side of the equation.
-18 + 18 + 4n = 0 + 18

Combine like terms: -18 + 18 = 0
0 + 4n = 0 + 18
4n = 0 + 18

Combine like terms: 0 + 18 = 18
4n = 18

Divide each side by '4'.
n = 4.5

Simplifying
n = 4.5

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